Polymorph is a debuff (a negative effect) that makes the player unable to attack and Silences them for a period of time.
- Brightwing's ability, "Polymorph", polymorphs an enemy for 1.25 seconds.
- Medivh's level 10 heroic ability, "Poly Bomb", polymorphs an enemy hero for 2 seconds. On expiration, "Poly Bomb" can spread to nearby enemy heroes.
- His level 20 talent, "Glyph of Poly Bomb", decreases "Poly Bomb"'s duration to 1 second.
- The Core on Garden of Terror creates curses underneath enemy heroes that polymorph them for 3 seconds.